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  • Authentication in Rails, where to start?

    - by Victor P
    Hello. Im learning Rails by building apps. I want to make my first authenticated app: users signup, login, do some changes in models they have access to and logout. I did the Google search but it is quite confusing: many plugins, many tutorials. Don't know where to start. Is there a state-of-the-art authentication method for Rails? What do you use in Production to authenticate your users? Any help in this will be helpful. Thanks

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  • Using special characters as keywords in latex listings package

    - by sha
    Hi, I am using the listings package for latex. I am using the SQL language definition and am adding some new keywords that I need, using morekeywords=. I have trouble defining some special characters as keywords, for example, I need [], <, &, and - to be considered as keywords and use the keyword style. I have tried adding these verbatim or with a preceding backslash. It did not work. Your help would be greatly appreciated. Thanks.

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  • Does iOS 4 Have "Real" Multitasking?

    - by pkulak
    Ever since the first beta came out I've been trying to find out if "real" multitasking is possible. I.E., can you put a program in the background and have it hang on to a network connection indefinitely? I'm thinking about IM or IRC apps, for example. I've compiled an app myself on OS 4, and without changing a thing it appeared to stay running in the background, but for all I know it was just suspended to memory. The docs say the best you can do is request up to 10 minutes, but in the developer presentation they showed off Skype sitting in the background and then notifying the user that a call was coming in. Does anyone know for sure how this is all going to work?

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  • floating in list causes trouble in IE6 and IE7

    - by Thom
    I have a toggle list that causes trouble in old IE browsers, tried to fix it for couple of hours but I failed again and again. Please check out the jsfiddle code: http://jsfiddle.net/vny63/ structure is similar to this: <li class="toggle"> <a class="left" title="gallery">gallery</a> (English) <span class="right float_right">3</span> <ul style="display: none;"> <li class="space_left"> lot of stuff here </li> </ul> </li> It is working well in IE8 and Firefox3

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  • n how to show cascade windows in Splitcontainer panel2 c#

    - by user1875373
    In MdiParent toolstripmenuItem, I'm writing the code to show all the windows in cascade or Tile Horizontal style. My code is: this.LayoutMdi(MdiLayout.Cascade); this.LayoutMdi(MdiLayout.TileHorizontal); This code will work in mdi parent only. But now I'm using a Split container in my Parent Form. In Panel1 I have buttons to Show the Form. In Panel2 My Forms will display, as: Forms.paymentPaid paidFm = new SalesandPurchases.Forms.paymentPaid(); paidFm.MdiParent = this; paidFm.Left = (this.myPanel.Width - paidFm.Width) / 2; paidFm.Top = (this.myPanel.Height - paidFm.Height) / 2; myPanel.Controls.Add(paidFm); paidFm.Show(); Now Because of my Split Container my code( this.LayoutMdi(MdiLayout.Cascade)) is not working for cascade the windows in Panel2. Please tell me any other way.

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  • Transferring data to (Windows) Mobile Devices

    - by Ritu
    I created an app for Windows Mobile 6.5 and am fairly happy with it. However, if anyone else need to use this app, they will have to transfer an initial file (txt or csv) to the device. For a developer this isn't a problem but is this too much to ask of an end user? Granted, they will want to move (sync) data back to their desktop after the device's data have been updated. So how do other apps solve this problem? Do I need to provide some kind of syncing software?

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  • sfConfig::get is not returning constants defined in app.yml

    - by morpheous
    I have an interesting problem. I am using Symfony 1.3.2. I have defined some constants in project/apps/frontend/config/app.yml and project/config/app.yml When I use the constant (correct spelling) in a piece of code like this $test=sfConfig::get('app_foobar'); the variable $test is assigned a null value. This is what I have checked so far: CHECK: cache files generated? (YES) CHECK: Do the cache files (config_app.yml.php) in the cache directory contain the constants defined in the app.yml file (YES) CHECK: Constant names used in the code matches the array keys found in config_app.yml? (YES) At this stage, I have run out of ideas. I dont want to supply a default value as a hack, because when I need to change the value of the constant, I will have to replace this in potentially hundreds of instances (too error prone). Is there anything that I have missed?. What could be causing this?

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  • Porting C++-code from Windows to Unix: systemcalls colliding with name of functions

    - by marvin2k
    Hi I'm porting some crufty C++ Windows-code to Linux, which uses functions called "open" and "close" inside every class... Very bad style, or? Luckily that wasn't a problem in windows, since their systemcalls are named different. When I try to call the systemcalls open() or close() I'm getting some compiler error about "no matching function for call for class:open()". I can't rename all our functions named "class::open" and "class::close" in the whole code, and I have to use open() and close() since I'm working with serial ports. So my question is: How can I tell the compiler, which open I mean? How can I escape or hide the namespace of a class in C++?

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  • How to use GWT on mobile devices?

    - by Chris
    hi I have a fairly large web application developed with GWT (and EJB). However on mobile devices (like windows mobile, black berry and such) the GWT start page remains simply white. I'm using GWT 1.6 and also tried 1.7 but nothing helps. It seems that the java script isn't executing and also isn't the noscript tag. Do you know how to make it working without rewriting the whole application in e.g. PHP?? I think it may be a general prob with GWT apps and not with my specific app. thx

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  • What good practices, if any, has the agile movement lost?

    - by clarke ching
    I am a long time agile advocated but one of the things that bothers me about Agile is that a lot of agile practitioners, especially the younger ones, have thrown out or are missing a whole lot of good (non Scrum, non XP) practices. Alistair Cockburn's style of writing Use Cases springs to mind; orthogonal arrays (pairwise testing) is another. I hope this is an okay forum to ask this, but since I read mostly Agile related books and articles and work with mostly Agile folk ... is there anything I'm missing? Thanks for all your help. StackOverlow is a fantastic resource.

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  • Javascript recursive data structure definition

    - by Matt Bierner
    I need to define a data structure recursively in Javascript. Here is a simple example of a circular linked list: // List a very simplified example of what the actual (non list) code does. function List(f, r) { return function(){ return [f, r]; }; } var head = List('a', List('b', List('c', head))); When this is executed, head in List 'c' is resolved to undefined, not List 'a' as I need. List is an example function that returns a function (It is not an Javascript list that I can append to). I tried to wrap the definition of head is a self executing named function, but that blew the stack when head was resolved. What is the Javascript style solution that I am overlooking?

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  • [Android] XML Parser

    - by lemon
    I'm trying to extract n0Y7ezLlIYA8R0K54rEmHaTOraBQVSPDjQaGlQxlGso4jdVN1kRxtcfskEs= using w3c dom <html> <div id='token' style='display:none;'> n0Y7ezLlIYA8R0K54rEmHaTOraBQVSPDjQaGlQxlGso4jdVN1kRxtcfskEs= </div> </html> but I seem to be stuck DocumentBuilder builder = DocumentBuilderFactory.newInstance().newDocumentBuilder(); Document doc = builder.parse(con.getInputStream()); NodeList list = doc.getElementsByTagName("div"); Can someone please point me to some basic tutorials that would help me solve my dilemma. Thanks.

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  • Beginner, learning as I go - how to get C#/SQLite db set up and ready for testing?

    - by ChrisC
    I've messed with Access a little bit in the past, had one class on OO theory, and one class on console c++ apps. Now, as a hobby project, I'm undertaking to write an actual app, which will be a database app using System.Data.SQLite and C#. I have the db's table structure planned. I have System.Data.SQLite installed and connected to VS Pro. I entered my tables and columns in VS, but that's where I'm stuck. I really don't know how to finish the db set up so I can start creating queries and testing the db structure. Can someone give me guidance to online resources that will help me learn how to get the db properly set up so I can proceed with testing it? I'm hoping for online resources specific to beginners using C# and System.Data.SQLite, but I'll use the closest I can get. Thanks.

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  • How to override browser default download behavior for files?

    - by moha297
    Lots of times we have to download files from the net. In IE we get to see the ugly download progress bar. In firefox we get to see a pop-up window opening etc. However, I have never seen this being over ridden in any manner. Until recently on the site *thesixtyone DOT com* If we get to download a song free and click on the ok link to start the download we get a pop up to select location in the default style of windows. Then we see the progress bar as shown below. Any ideas on this? I am trying to see how these guys did this. you can see the image http://highwaves.files.wordpress.com/2010/04/61-download-bar.jpg

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  • Can I get a "base URL" in Wordpress within a template file?

    - by alex
    Usually in my PHP apps I have a base URL setup so I can do things like this <a href="<?php echo BASE_URL; ?>tom/jones">Tom</a> Then I can move my site from development to production and swap it easily and have the change go site wide (and it seems more reliable than <base href="" />. I'm doing up a Wordpress theme, and I am wondering, does WordPress have anything like this built in, or do I need to redefine my own? I can see ABSPATH, but that is the absolute file path in the file system, not something from the document root.

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  • Java Swing architecture for flipping through JPane based views

    - by imhotep
    Hi all, I have done a couple of simple swing based apps with static layout, but now I've run into a problem while trying to create an app containing multiple views which are changed by pressing appropriate navigational button. You could compare the idea to a website so that every view has buttons to access certain other views but this would work inside a single JFrame. I've found that maybe CardLayout (Cardlayout example) might be appropriate solution for this kind of structure, but I'm unable to figure out a way to switch the views from the buttons which are inside of the JPanes that I've implemented in their separate classes, Of course one way would be to instantiate everything in the parent class like in the small java tutorial example, but this isn't quite clean nor modular for multiple views, isn't it. How can this be implemented so that I can access the view switching method?

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  • Creating a fancy search bar with Swing components

    - by Kavon Farvardin
    I'm trying to come up with an elegant recreation of the search bar component in Thunderbird. The clear button doesn't appear until there is text in the box, so that screen-shot is a bit inaccurate. Should I use a layered pane and get some buttons to float above the box? (but then getting the text to not appear below the buttons would be hacky) Maybe just put buttons at the ends of the search bar and have it somehow blend in? Any ideas or maybe a style reconsideration is welcome, thank you.

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  • Printing complex widgets in Qt

    - by Jens
    I have a complex widget with tons of different subwidgets, e.g. subclasses of QLabel. I want to print this widget, but obviously I do not want to print the background, I want to print with differing text colors or have the style of frames slightly modified. As I do not really want to iterate through all subwidgets with a special "print" function, which I would need to attach to all widgets (how to add "print" to a QLabel?), I would like to use paintEvent. If I have a hierarchy MyWidget - derived from - some QWidget, I would like to insert a sublayer MyWidget - MyPrintWidget - some QWidget, where myPrintWidget::paintEvent would check, if the current print is going to the screen (thus call QWidget::paintEvent), else if we are printing to the printer, call some function MyPrintWidget::drawWidget instead. Is this the right way to print-enable a widget? How can I figure out in paintEvent, that I'm printing to a printer instead of the screen? Is there a good example of printing complex widgets?

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  • MPMoviePlayerController seems to make 2 calls for each movie

    - by user76328
    I seem to have an issue where an iphone app using the MPMoviePlayerController seems to make 2 calls to the server for each video it wants to play back. This occurs with iphone 3.x OS and libraries but not with iphone 2.x. I know that iphone does progressive download and will make multiple 206 requests, etc. but as far as our back end is concerned the player appears to make 2 separate sessions. This only appears to be an issue with iPhone native apps and not iphone videos played through safari. Additional info from apple: iPhone OS 3.0 added support for streaming audio and video over HTTP, and MPMoviePlayerController must validate the media before playback to determine if it is streaming content or progressively downloaded content. This is the delay you are experiencing. On a fast network, the delay should be minimized. Is this double check causing 2 sessions be created for each video request? Any one else seeing same issue? Is there a remedy?

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  • Using selector to change TextView text color

    - by rafuru
    I'm trying to use a TextView to define the style of a TabWidget on a tabhost. I just created a selector for bgcolor and works fine, but i want to make a selector for textColor but the text color don't change: This is my tab_text_selector.xml: <?xml version="1.0" encoding="utf-8"?> <selector xmlns:android="http://schemas.android.com/apk/res/android" > <item android:state_selected="true" android:color="@android:color/white" /> <item android:state_focused="true" android:color="@android:color/white" /> <item android:state_pressed="true" android:color="@android:color/white" /> </selector> And this is the code when i'm trying to use on a textView: TextView txtTab=new TextView(this); txtTab.setTextColor(R.drawable.tab_text_selector); txtTab.setBackgroundResource(R.drawable.tab_bg_selector); txtTab.setGravity(Gravity.CENTER); txtTab.setText("Agregar Idea"); I know the text color must be white in any case but it doesn't.

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  • How to reference an object in a lower fragment in android

    - by Silas Greenback
    I am trying to build a help screen that is going to go on a mediaplayer. The idea is to put a fragment with a transparent theme on top of the current view. (See How do I create a help overlay like you see in a few Android apps and ICS? for the basic idea). Now, I understand the steps in the mentioned link, but how do I connect the circles and arrows and paragraphs next to each one (explaining what each one was) to the lower object? Example, I have an object: R.id.music_button and I want there to be and arrow that points to music button. Trying to support as many devices as we do it will be very difficult to just draw a few pictures as part of the top layout and expect them to line up. Again, how do I reference an object on a fragment below the top level? Thanks

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  • Integrating Incoming Email Into a php/mysql App

    - by phirschybar
    I am looking to create an incoming email daemon switchboard that I can integrate with various remote php/mysql apps. Ideally I want to check the 'to' address to see if it is in a mysql database and if it is, have the email parsed and posted via CURL to a target destination as well as have attachments saved somewhere locally. I will likely set up a rackspace cloud server dedicated to this task (just accepting emails and posting to 3rd party APIs). However, I do not know where to start. Which server platform / distribution should I go with? Which software needs to be customized, etc?

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  • Error #2126: NetConnection object must be connected

    - by Shuo
    Hey guys , I want to count the online user,when each client login the system,it's connecting to the server and increase a variable stored in a remote shared object. But when client connecting server,problems arises:Error #2126: NetConnection object must be connected My web layout: Website --- apps --- userLogin Code snippets: rtmpnc = new NetConnection(); rtmpnc.objectEncoding = ObjectEncoding.AMF0; var uri:String = ServerConfig.getChannel("my-rtmp").endpoint + "/userLogin"; rtmpnc.connect("http://202.206.249.193:2367/userLogin"); rtmpnc.addEventListener(NetStatusEvent.NET_STATUS,onNetStatusHandler); The onNetStatusHander is defined as : switch(event.info.code) { case "NetConnection.Connect.Success":onConnSuccess();break; case "NetConnection.Connect.Failed":onConnError();break; } Could anyoue help me out?Much thanks! Best,Shuo

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  • StackOverflow WordPress Plugin: Sidebar Widget [closed]

    - by Fernando
    I used the idea from "StackOverflow badge to show in your blog" from here to develop a small WordPress plugin to show your SO reputation and badges on your WordPress weblog sidebar. It's awfully lacking some graphic design, style, color, etc. I also thought of adding the user avatar, and images for the different badges. But it's working so far, and it's pretty late and I have to get some sleep. But I'll add the stuff I mentioned tomorrow. That was quite an interesting PHP challenge. Hope someone finds it as usefull as me (already showing it off on my blog :P ). If you're interested: Download it here

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